US2523294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-tuning amplifier
Assignee: Farnsworth Research Corp
•
Filing: 1946-03-16
•
Granted: 1950-09-26
•
Expires: 1966-03-16
Abstract
No abstract record available.
Inventors
- 👤 Clyde E Hallmark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:21
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/50; H03; H03J; H03J7/00; H03J7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2173426A
Cited
US2221096A
Cited
US2300632A
Cited
US2321269A
Cited
US2413263A
Cited
US2341232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |